New trends in art in the period after 1870
How does Seurat, Sunday Afternoon on the Island of La Grande Jatte illustrate new trends in art in the period after 1870?
https://en.wikipedia.org/wiki/A_Sunday_Afternoon_on_the_Island_of_La_Grande_Jatte#/media/File:A_Sunday_on_La_Grande_Jatte,_Georges_Seurat,_1884.jpg